digenaldo

#funções projeto gerenciador de bibliotecas
#autores: digenaldo neto, caio cezar, walber luis

def retornaLogin():
    """ Verifica o arquivo e retorna todo o arquivo do funcionario em lista """
    lista2 = []
    arquivo = open('dadosFuncionarios.txt','r')
    lista = arquivo.readlines()
    for i in range(len(lista)):
        string = lista[i]

digenaldo

package main

import (
	"fmt"
	"log"
	"net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, "Hello from the api!")

digenaldo

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

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/*
        Original idea from
        http://www.acloudtree.com/how-to-shove-data-into-postgres-using-goroutinesgophers-and-golang/
*/
package main

import (
        "log"
        "time"
        "os"

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Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

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Google dork cheatsheet

Search filters

Filter	Description	Example
allintext	Searches for occurrences of all the keywords given.	allintext:"keyword"
intext	Searches for the occurrences of keywords all at once or one at a time.	intext:"keyword"
inurl	Searches for a URL matching one of the keywords.	inurl:"keyword"
allinurl	Searches for a URL matching all the keywords in the query.	allinurl:"keyword"
intitle	Searches for occurrences of keywords in title all or one.	intitle:"keyword"

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Install Terminator (shell)

sudo add-apt-repository ppa:gnome-terminator
sudo apt-get update
sudo apt-get install terminator

Terminator should be setup as default now. Restart your terminal (shortcut: "Ctrl+Alt+T").

Install ZSH

digenaldo

package main

import (
	"context"
	"fmt"
	"net"
	"os/exec"
	"strconv"
	"strings"
	"sync"